Sash-lock.



PATENTEDJUNE 9, 1908.

W. ZANDER.

SASH LOCK. APPLICATION r1121) 0012s. 1901.

w ,J 2mm I, human 0% M UNITED' STATES AET OFFQE,

WILLIAM ZANDER, OF CHICAGO, ILLINOIS.

SASH-LOGK.

Application filed October 8, 1907.

To all whom it may concern:

Be it known that I, WILLIAMZANDER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Sash- Lock, of which the following is aspecification.

This invention has reference to improvements in sash locks, and itsobject is to produce a simple form of sash lock which may be easilyconstructed of sheet metal, and at the same time will be amply strongfor the purpose of resisting effectually any attempt to raise the windowsash when the lock is in operative position.

The attachment comprises a sash lock composed of two members, one ofwhich is in the form of a bracket for permanent attachment to a windowsash and the other of which is in the form of a wedge or block pivotallyconnected to the first-named member so as to be moved about a verticalaxis either into the path of the adjacent sash or to one side toward theglass in the sash so as to lie in the space between the outer edge ofthe frame of the sash and the glass contained therein.

The invention will be best understood by reference to the followingdetailed description, taken in connection witlrthe accompanying drawingsforming part of this specification, in which,

Figure 1 is a face view of a portion of a window at the junction of thesashes, showing the improved sash fastener in operative position toprevent the raising of the lower sash; Fig. 2 is a similar view on alarger scale than Fig. 1, showing the sash fastener in inoperativeposition; and Fig. 3 is a side view of the fastener in operativeposition, the adjoining portions of the window sashes being shown insection.

Referring to the drawings, there is shown a portion of a window with theupper sash 1 and the lower sash 2, and these sashes may be considered asindicative of any two structures movable one past the other and which itis desirable to lock against such movement.

While in the following description reference will be made to Windowsashes only, it is to be understood that the invention is notnecessarily limited to such use but may be used wherever it will performthe functions ascribed to it.

The sash fastener is composed of two Specification of Letters Patent.

Patented June 9, 1908.

Serial No. 396,481.

members. One member 3 is in the form of a flat plate adapted to beattached to one of the side bars of the upper window sash, and isprovided on its lower edge with a downwardly projecting tongue 4 toserve to broaden the bearing face of the member 3 against the sash. Thismember is held in place by fastening devices 5 which may be in the formof nails driven through suitable perforations in the plate 3, or thesefastening devices may be screws. On each side of the tongue 4 the plate3 is struck up to form lugs 6 to which reference will hereinafter bemade. One side of the plate 3 extends laterally beyond the inner edge ofthe side member of the sash frame and is there formed with a tongue 7projecting toward the glass 8 of the sash. The entire structure 3 may bestruck out from a single piece of sheet metal, say sheet steel, and canbe made at trifling expense.

The other member 9 of the sash fastener is in the form of a wedge havinga rectangular face with sides 10 of triangular shape and. a continuation11 of the face bent over to form the thick end. of the wedge. Extendinglaterally from one side of the wedge body 9 is a bracket 12 formed inone piece with the body 9 and terminating in an angle tongue 13. Thetongues 7 and 13 are joined by a rivet connection 14 which at the sametime serves as a pivot, the heads of the rivet acting as broad bearingfaces for holding the two tongues in contact and permitting them to turnon the longitudinal axis of the rivet.

The member 9 is made of one piece of sheet metal, say sheet steel, andmay be stamped into the form shown at very little expense.

The base of the wedge constituting the member 9 is designed to lie flatagainst the side of the sash frame directly beneath the plate 3, so thatthe end extension 11 where it joins the base of the wedge shall lieimmediately under and practically in contact with the lugs 6 beforereferred to. In order that this may be so the said end of the extension11 is cut away as shown at 15 so as to straddle the tongue 4:.

Now, let it be assumed that the member 3 of the sash fastener isattached to one side of the upper sash of a window with the sharp end ofthe wedge 9 a short distance above the meeting rails of the two sashes.Should there now be an attempt to raise the lower sash its'meeting railwill be brought into contact with the lower end of the wedge body 9 andthe tendency will be to either lift such wedge body with it or for themeeting rail to ride up the inclined edge of the wedge. The tendency ofthe lower sash to lift the wedge body is resisted by the engagement ofthe part 11, constituting the broad end of the wedge, with the lugs 6 attheir point of connection with the plate 3, and should there be anylooseness of the joint produced by the rivet 14 the lugs 6 will stillresist any upward movement of the wedge body 9 so long as the latter isat all engaged with the said lugs. Should there be a tendency of thelower sash to ride up the inclined face of the wedge, as might occurwere the sash a little loose as is often the case, then the wedge facewill force the lower sash outwardly away from the upper sash until thisoutward movement is resisted by the engagement of the sash with theusual retaining strips. Thus, when the wedge body 9 is in operativeposition the lower sash is most effectually lOGl'GCl from upwardmovement, and, lil'ewise, the upper sash cannot be lowered since suchmovement is resisted by the lower sash.

When it is desired to put the sash lock in a position where it will notinterfere with the raising of the lower sash or the lowering of theupper sash, then it is turned about the pivot formed by the rivet 14until it lies wholly within the space between the glass 8 and the planeof the face of the side of the window sash. When the member 9 is in thislast-named position the meeting rails of either sash will not engagesaid member or the plate 3, and, consequently, the sashes may be raisedor lowered as the case may be without interference.

1. A sash fastener comprising a plate adapted to be secured to the sidemember of a window sash and of sufficient length to project beyond oneedge of the same, and a wedge-shaped body pivotally secured to the plateand movable about its pivot into and out of operative relation to theother window sash.

2. A sash fastener comprising a plate adapted to be secured to the sidemember of a window sash, said plate having projecting lugs formed on itslower edge and a tongue also formed on its lower edge and projecting ina direction opposite the direction of proj ection of the lugs, and awedge-shaped body pivotally connected to the tongue on the plate andmovable about the same to a posia side bracket formed thereon and atongue formed on said bracket, said tongue being pivotally connected tothe tongue on the ate.

p 4. A sash lock comprising a plate adapted to be secured to the sidemember of a sash, said plate having a downwardly projecting tongue withlugs on each side thereof and another tongue projecting in a directionat right angles to the first-named tongue and oppositely to said lugs,and a wedge-shaped body having its wide end cut away to straddle thedownwardly projecting tongue on the plate, said wedge-shaped body alsohaving a side bracltet with a tongue pivotally and permanently securedto the last-named tongue on the plate.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

WILLIAM ZANDER. Witnesses:

H. A. LINNEMEYER, ANTON MICHEL.

